Vulners
Lucene search
CVE-2026-27656 Account Takeover via Substring Matching in OpenID Connect Authentication
| Reporter | Title | Published | Views | Family All 13 |
|---|---|---|---|---|
 | CVE-2026-27656 | 25 Mar 202616:28 | – | attackerkb |
 | CVE-2026-27656 | 26 Mar 202603:00 | – | circl |
| CVE-2026-27659 | 25 Mar 202618:08 | – | circl |
 | Mattermost 安全漏洞 | 25 Mar 202600:00 | – | cnnvd |
 | CVE-2026-27656 | 25 Mar 202616:28 | – | cve |
 | EUVD-2026-15805 | 25 Mar 202618:31 | – | euvd |
 | Mattermost allows attackers to take over arbitrary user accounts via overly permissive substring matching flaw | 25 Mar 202618:31 | – | github |
 | CVE-2026-27656 | 25 Mar 202617:16 | – | nvd |
 | GHSA-FG35-5RF6-QG3G Mattermost allows attackers to take over arbitrary user accounts via overly permissive substring matching flaw | 25 Mar 202618:31 | – | osv |
 | PT-2026-27989 | 25 Mar 202600:00 | – | ptsecurity |
10
[
{
"defaultStatus": "unaffected",
"product": "Mattermost",
"vendor": "Mattermost",
"versions": [
{
"lessThanOrEqual": "11.4.0",
"status": "affected",
"version": "11.4.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "11.3.1",
"status": "affected",
"version": "11.3.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "11.2.3",
"status": "affected",
"version": "11.2.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "10.11.11",
"status": "affected",
"version": "10.11.0",
"versionType": "semver"
},
{
"version": "11.5.0",
"status": "unaffected"
},
{
"version": "11.4.1",
"status": "unaffected"
},
{
"version": "11.3.2",
"status": "unaffected"
},
{
"version": "11.2.4",
"status": "unaffected"
},
{
"version": "10.11.12",
"status": "unaffected"
}
]
}
]| Source | Link |
|---|---|
| mattermost | www.mattermost.com/security-updates |
Data
Build on a solid foundation with Vulners data
We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data
Api
Power your application with Vulners API
The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access
App
Assess and manage vulnerabilities with Vulners tools
Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation
25 Mar 2026 16:28Current
CVSS 3.15.7
EPSS0.00037